My pinion and ring gear in the rear end keep stripping out, it didn't start happening until i dropped to a 18t cb and put 6.9 inch tires on it. Do you think its from the cb or the tires i'm getting ready to be on my 3rd set and wondering what i should change. too much torque or too much to turn the tires?
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Stripped Pinion and Ring gear
- Thread starter gibbons
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Swapping to a larger wheel/tire combo will make a considerable change to you overall gear ratio. This essentially gears the truck for higher top speed but at the expense of acceleration. You are going to have more stress on the drivetrain at low speed with that change. Now you sort of even out the overall ratio when you drop a few teeth on your clutch bell. This change creates a ratio that will yield lower top speed and increase torque. So the situation you have is that you've increased torque by dropping the size of your c/b but you've put more strain on your drivetrain by going to a larger wheel combo. With more torque and more resistance the outcome is that the weakest link in your drivetrain is breaking.. and that happens to be your ring/pinion.
Try shimming your pinion and see if you can get a better mesh, but if you still continue to strip those gears you're going to need to upgrade that part. Or you could put the larger c/b back on and that should help tame the torque. Before I went to 1/8 diffs (big $$ upgrade) I had RRP ring and pinions and never had a problem with them, although I would then break diff cups under hard braking in the grass.
Try shimming your pinion and see if you can get a better mesh, but if you still continue to strip those gears you're going to need to upgrade that part. Or you could put the larger c/b back on and that should help tame the torque. Before I went to 1/8 diffs (big $$ upgrade) I had RRP ring and pinions and never had a problem with them, although I would then break diff cups under hard braking in the grass.
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I didn't even look yesterday to make sure that it was the pinion and ring gear, I was looking at it earlier and noticed it twisted my center rear drive shaft off. I'm going to get a set of steel drive shafts, are they worth the money? What would be the next thing to break if I don't change anything except the drive shafts? Thanks for any help
The ring/pinion or the diff cup screws will shear off. I don't know what it would take, but the maxx 3.3 and revo diffs are designed better. You might want to look into figuring out what it would take to convert to those... then use the 3.3 axles vs steel. They are a bit bigger/beefier, but still provide a cheaper weak link than a diff.